A tasty excerpt from the article:

"If you're being wooed, Jay writes, be a chameleon. Don't act like the lunch site is beneath you or like you've just stepped into Willy Wonka's Chocolate Factory. In the book, a Commonwealth Title executive tells of an escrow officer candidate who went nuts over dessert at a casual, upscale restaurant.

" 'She was moaning,' Jay laughs, recalling the exec's imitation of the woman. 'He said it was like it was the best thing she ever had in her mouth. ... She was just going, "Mmmmmm, it's so creamy and gooood." ' "

The book is focused on business lunches, not just interview lunches, but some of the advice will apply to all those situations.